EP3768492B1 - Procédé et outil pour fabriquer par hydroformage un récipient en matière plastique, en particulier un réservoir de carburant - Google Patents

Procédé et outil pour fabriquer par hydroformage un récipient en matière plastique, en particulier un réservoir de carburant Download PDF

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Publication number
EP3768492B1
EP3768492B1 EP19711552.0A EP19711552A EP3768492B1 EP 3768492 B1 EP3768492 B1 EP 3768492B1 EP 19711552 A EP19711552 A EP 19711552A EP 3768492 B1 EP3768492 B1 EP 3768492B1
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EP
European Patent Office
Prior art keywords
tool
claws
container
molding
closing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP19711552.0A
Other languages
German (de)
English (en)
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EP3768492A1 (fr
Inventor
Ralf Berlin
Claudia Mientkewitz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Volkswagen AG
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Volkswagen AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Volkswagen AG filed Critical Volkswagen AG
Publication of EP3768492A1 publication Critical patent/EP3768492A1/fr
Application granted granted Critical
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/18—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor using several blowing steps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/48—Moulds
    • B29C49/4802—Moulds with means for locally compressing part(s) of the parison in the main blowing cavity
    • B29C49/4817—Moulds with means for locally compressing part(s) of the parison in the main blowing cavity with means for closing off parison ends
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/4273—Auxiliary operations after the blow-moulding operation not otherwise provided for
    • B29C49/4278—Cutting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/48—Moulds
    • B29C49/482—Moulds with means for moulding parts of the parisons in an auxiliary cavity, e.g. moulding a handle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/48—Moulds
    • B29C49/4823—Moulds with incorporated heating or cooling means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/48—Moulds
    • B29C49/4802—Moulds with means for locally compressing part(s) of the parison in the main blowing cavity
    • B29C2049/4805—Moulds with means for locally compressing part(s) of the parison in the main blowing cavity by closing the mould halves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/48—Moulds
    • B29C49/4823—Moulds with incorporated heating or cooling means
    • B29C2049/4825—Moulds with incorporated heating or cooling means for cooling moulds or mould parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/48—Moulds
    • B29C49/50—Moulds having cutting or deflashing means
    • B29C2049/503—Moulds having cutting or deflashing means being independently movable during the mould closing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
    • B29C49/04—Extrusion blow-moulding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/28—Blow-moulding apparatus
    • B29C49/30—Blow-moulding apparatus having movable moulds or mould parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/48—Moulds
    • B29C49/50—Moulds having cutting or deflashing means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/04—Polymers of ethylene
    • B29K2023/06—PE, i.e. polyethylene
    • B29K2023/0608—PE, i.e. polyethylene characterised by its density
    • B29K2023/065—HDPE, i.e. high density polyethylene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/712—Containers; Packaging elements or accessories, Packages
    • B29L2031/7172—Fuel tanks, jerry cans

Definitions

  • the invention relates to a method and a tool for producing a plastic tank, in particular a fuel tank, by internal pressure molding and in particular by blow molding.
  • a heated and thus flow-resistant preform made of thermoplastic material is injected with gas, e.g. B. with compressed air, inflated and lays down on a shaping tool wall or on the inner wall of a tool cavity. After inflation, the hollow body produced by inflation cools down in the tool until it has sufficient dimensional stability and can be demoulded.
  • gas e.g. B. with compressed air
  • the hollow body produced by inflation cools down in the tool until it has sufficient dimensional stability and can be demoulded.
  • a tubular preform is used, which can be produced immediately beforehand by extrusion (so-called extrusion blow molding).
  • Plastic containers used for motor vehicles such as fuel containers (fuel tanks) in particular, can be produced by blow molding.
  • various built-in parts have to be arranged inside such a plastic container, such as fill level indicators, aeration and ventilation elements, pumps, filters, anti-slosh walls, valves, fastening elements and the like.
  • Current efforts are being made to introduce as many or all of the built-in parts into the plastic container during its manufacture, which requires accessibility to the interior of the container.
  • clamping devices arranged on the blow mold parts and the preform is torn open into two halves between the clamping devices.
  • the clamping devices each have a clamping element that can be displaced in the opening and closing direction of the blow mold parts and a stop edge arranged opposite this on the front side, with a groove being formed between the clamping element and the stop edge into which the material of the preform is pressed in a bead-like manner, and the clamping element for clamping the Material of the preform or the stop edge is shifted.
  • German patent application 10 2017 202 839.4 describes a method and a tool for producing a plastic container by internal pressure moulding, in particular blow molding, of a preform which is pressed out of the tool cavity and gripped outside the tool cavity by means of gripping devices.
  • the gripped section is torn off at a tear-off edge arranged outside the mold cavity, and the formed container is divided into two container halves.
  • the patent application EP1216812 discloses a method for producing a plastic container by internal pressure molding, comprising the steps of: arranging a tube-like preform between the tool parts of a molding tool designed with a tool cavity; - Closing the mold and forming or preforming a container from the preform by internal pressure, with a peripheral section of the preform being pressed through a mold gap into a chamber surrounding the mold cavity and being pressed in this chamber against claws with fixed inner retaining claws.
  • the invention is based on the object of specifying a further method and a device for producing a plastic container by internal pressure molding of a tubular preform which does not have at least one disadvantage associated with the prior art, or at least only to a reduced extent.
  • the lateral displacement of the tear-off claws takes place when the mold is closed. That is, the mold does not have to be opened to separate the formed or preformed container into two container halves.
  • Lateral displacement is understood in particular to mean that the tear-off claws are moved transversely to the closing direction or closing axis of the mold or the tool parts.
  • transverse means that the movement axes of the tear-off claws preferably form an angle of between 45° and 90° and particularly preferably an angle of between 60° and 90° relative to the closing axis.
  • the tear-off claws are moved essentially perpendicularly (90°) to the closing direction.
  • the tear-off claws are each pulled outwards (laterally outwards), i. H. moved away from the mold cavity.
  • the molding tool used preferably comprises two tool parts (mold halves or sides) formed with cavity sections.
  • two tool parts preferably, on each of the two tool parts around the tool cavity pairs of claws are arranged with inner (ie facing towards the tool cavity) fixed retaining claws and outer (ie facing away from the tool cavity) movable tear-off claws.
  • a claw is a protruding element, ie one that protrudes into the chamber.
  • B rake-like, claw-like, blade-like or the like.
  • the preform is pressed onto the claws in the relevant section by the internal pressure, resulting in a form fit (in particular without associated perforation), for example by the material of the preform being pressed in a bead-like manner over the claws, and tearing forces being able to be applied to the relevant section in this way.
  • the area required for reliable tearing can be kept very small. In addition, no gripping or clamping devices are required.
  • the mold is preferably (locally) cooled or heated in the area between the inner holding claws and the outer tear-off claws by means of temperature control elements.
  • the material properties of the preform can be influenced by targeted cooling or heating in the relevant area in such a way that tearing is promoted (e.g. due to brittle fracture or melt separation).
  • the latter is closed in a gas-tight manner at its axial ends.
  • the hose-like preform can be sealed gas-tight when the mold is arranged or when it is closed, for example by welding.
  • a sealed preform can also be provided as a prefabricated starting product.
  • a gas also air
  • the internal pressure is preferably generated by blowing a gaseous pressure medium into the interior of the closed preform, in particular with the aid of at least one blowing mandrel.
  • the container can be essentially fully formed or only preformed.
  • the mold parts are preferably moved closer together (second closed position) when the mold is closed again for the purpose of forming or finishing the container than when the mold was previously closed for preforming the container (first closed position).
  • temperature control elements are arranged between the outer tear-off claws and the inner retaining claws of the pairs of claws for (local) cooling or heating, as described above.
  • the outer tear-off claws can be fastened to slides, in particular to slides that can be shifted or moved laterally, which at the same time delimit the chamber surrounding the tool cavity laterally (i.e. transversely to the outside).
  • the slides are preferably arranged on both tool parts as opposite slides or pairs of slides.
  • the slides can be moved by means of suitable actuators, for example hydraulic cylinders, or else by means of a wedge slide mechanism.
  • the molding tool according to the invention preferably has a first closed position for preforming the container and a second closed position, in which the tool parts are moved closer together, for molding the container.
  • the first closed position and the second closed position can be made possible by a different (lateral) path of travel of the slides, in particular in such a way that the slides lying opposite one another can assume an inner position (initial position) which is the first closed position allows between the tool parts, and at least one outer, mutually offset position (end position), which allows the second closed position between the tool parts.
  • the blow molding tool 100 shown only schematically has two tool parts or halves 110 and 120 that are movable relative to one another and are formed with a shaping tool cavity 130 . Furthermore, both tool parts 110 and 120 have slides 170 which are arranged around the tool cavity 130 and which can be displaced laterally, ie transversely to the closing direction S.
  • the blow molding tool 100 is installed in a blow molding machine, not shown, in particular in such a way that the tool parts 110 and 120 are aligned vertically (see reference symbol v), so that a tubular parison 200 to be inflated can be introduced from above. Because of the vertical orientation v, the tool parts 110 and 120 can also be referred to as tool sides.
  • the production of a fuel tank 260, in particular a fuel tank or tank, with built-in parts 250 is described below. The individual steps are preferably carried out automatically and in particular fully automatically.
  • the preferably extruded, tubular preform 200 is closed gas-tight at its axial ends and positioned between the opened tool parts 110 and 120 in the tool cavity 130, as shown in FIG 1 shown.
  • the hose-like preform 200 is formed, for example, from HDPE (high-density polyethylene) and is processed in the heated or still hot-melt state.
  • a hollow body is produced from the tubular preform 200 by pre-blowing, which is deformed when the blow molding tool 100 is closed by moving the tool parts 110 and 120 together, with a peripheral section 210 of the preform 200 passing through a tool gap 160 between the tool parts 110 and 120 out of the tool cavity 130 is pressed out and pressed into a chamber or peripheral outer chamber 150 surrounding the mold cavity 130.
  • the chamber 150 is formed from the partial chambers 151 and 152 when the tool parts 110 and 120 are moved together. Any protruding outer edge of the preform 200 can be clamped between the slides 170, as shown in 2 shown, and is squeezed off by appropriate design of the slide 170.
  • the preform 200 or the hollow body formed from it is blow-molded or inflated by applying a gaseous pressure medium, e.g 220 is preformed.
  • a gaseous pressure medium e.g 220
  • the peripheral section 210 of the preform 200 located in the chamber 150 is also deformed by the internal pressure and is pressed against pairs of claws 140 with inner retaining claws 141 and outer tear-off claws 142 or onto the claws 141 and 142 blown.
  • the claws 141 and 142 are arranged laterally around the tool cavity 130 on both tool parts 110 and 120, the inner retaining claws 141 (ie facing the tool cavity 130) being stationary and the outer tear-off claws 142 (ie facing away from the tool cavity 130) being movable.
  • the slides 170 form an outer mold seal (first sealing level) that is only effective in this first mold closed position and thus enable pressure to build up in the chamber 150.
  • the slides 170 With the blow molding tool 100 closed, the slides 170, starting from their in 2 inner initial position shown laterally, ie transversely to the closing direction S of the tool parts 110 and 120 (see 1 ), and outwards, ie directed away from the tool cavity 130, shifted what in 3 is indicated by the arrows.
  • the slides 170 have a different travel path, as shown in FIG 3 evident.
  • the section 210 between the moving outer tear-off claws 142, which are connected to the slides 170, and the stationary inner retaining claws 141, which are connected to the tool segments 135, is torn open, whereby the preformed container 220 is split into two Container halves 230 and 240 is divided - without the mold 100 being opened, ie with the mold 100 closed targeted modification of the material properties to promote tearing.
  • the blow mold 100 is then opened leaving the container halves 230 and 240 in the respective mold parts 110 and 120 as shown in FIG 4 shown.
  • the built-in parts 250 are positioned in the interior of the container, which is now accessible, and fixed on at least one inner side. Furthermore, the torn pieces A can be removed from the blow mold 100 .
  • the blow molding tool 100 is now closed again, with the tool parts 110 and 120 assuming a second, narrower closed position, as in FIG figure 5 shown.
  • This narrower tool closing position is made possible by the shifted slides 170 pushed outwards. This allows the tool parts 110 and 120 to move further together and in the first closed position (see 2 and 3 ) Still existing tool gap 160 is closed.
  • the blow molding tool 100 When the blow molding tool 100 is closed again this time, the container halves 230 and 240 are joined together.
  • the blow molding tool 100 can have a heating device 190 with which the edges of the container halves 230 and 240 to be joined can be reheated in order to enable a materially bonded and gas-tight joining, with other heating and/or connection options also being possible.
  • the now gas-tight container bladder is inflated further by subjecting its interior to a gaseous pressure medium, in particular compressed air, and is thereby pressed against the inner wall of the tool cavity 130 in the following manner, as a result of which the two-part container 260 is completely formed.
  • the plastic container 260 produced with the integrated built-in parts 250 cools down in the blow molding tool 100 until it has sufficient dimensional stability and can be removed from the mold after the blow molding tool 100 has been opened, as in 6 shown. During the previous mold closing process (see figure 5 ) the container 260 produced can also be trimmed using an integrated cutting or trimming device 137 . In order to demould the container 260 and any waste pieces A, the blow molding tool 100 can have ejectors (not shown). To produce another container 260, the slides 170 are now returned to their inner starting position (see 1 ) postponed.
  • the container 260 can be essentially formed or fully formed as soon as the mold 100 is closed for the first time without preforming, then by lateral displacement of the Tear-off claws 142 are separated, opened, fitted with built-in parts 250 and joined the second time the mold is closed (with or possibly also without internal pressure).

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)

Claims (10)

  1. Procédé de fabrication d'un récipient en plastique (260) par moulage par pression interne, comprenant les étapes :
    - de disposition d'une préforme (200) de type tuyau entre les parties d'outil (110, 120) d'un outil de moulage (100) formé avec une cavité d'outil (130) ;
    - de fermeture de l'outil de moulage (100) et de moulage ou de prémoulage d'un récipient (220) à partir de la préforme (200) par pression interne, une section périphérique (210) de la préforme (200) étant pressée à travers une fente d'outil (160) dans une chambre (150) entourant la cavité d'outil (130) et étant pressée dans cette chambre (150) contre des paires de griffes (140) comprenant des griffes de fixation (141) internes fixes et des griffes d'arrachage (142) externes mobiles ;
    - de déplacement latéral des griffes d'arrachage (142) externes, les griffes d'arrachage (142) externes étant déplacées perpendiculairement au sens de fermeture ou à l'axe de fermeture de l'outil de moulage (100) ou des parties d'outils (110, 120),
    de sorte que la section périphérique (210) soit déchirée entre les griffes d'arrachage (142) externes et les griffes de fixation (141) internes et que le récipient (220) soit divisé en deux moitiés de récipient (230, 240).
  2. Procédé selon la revendication 1,
    caractérisé en ce que
    l'outil de moulage (100) est refroidi ou chauffé entre les griffes de fixation (141) internes et les griffes d'arrachage (142) externes au moyen d'éléments de thermorégulation (145).
  3. Procédé selon la revendication 1 ou 2, comprenant les étapes supplémentaires :
    - d'ouverture de l'outil de moulage (100), une moitié de récipient (230, 240) restant respectivement dans la partie d'outil (110, 120) correspondante ;
    - de fixation d'au moins une pièce d'insert (250) à au moins une des moitiés de récipient (230, 240) ;
    - de fermeture de l'outil de moulage (100), les moitiés de récipient (230, 240) étant assemblées, et de moulage par soufflage du récipient assemblé, dont la formation est ainsi finie ;
    - d'ouverture de l'outil de moulage (100) et de démoulage du récipient fini (260).
  4. Procédé selon la revendication 3,
    caractérisé en ce que
    les parties d'outil (110, 120) sont rapprochées plus étroitement lors de la fermeture de l'outil de moulage (100) pour le moulage du récipient (260) que lors de la fermeture pour le prémoulage du récipient (220).
  5. Outil de moulage (100) pour la fabrication d'un récipient en plastique (260) par moulage par pression interne d'une préforme (200) de type tuyau, en particulier par l'utilisation d'un procédé selon l'une quelconque des revendications précédentes, comprenant :
    - deux parties d'outil (110, 120) formées avec une cavité d'outil (130) et mobiles l'une par rapport à l'autre ;
    - au moins une chambre (150) entourant la cavité d'outil (130) ; et
    - des paires de griffes (140) disposées dans la chambre (150) autour de la cavité d'outil (130), comprenant des griffes de fixation (141) internes fixes et des griffes d'arrachage (142) externes pouvant être déplacées latéralement, perpendiculairement au sens de fermeture ou à l'axe de fermeture de l'outil de moulage ou des parties d'outil.
  6. Outil de moulage (100) selon la revendication 5,
    caractérisé en ce que
    des paires de griffes (140) comprenant des griffes de fixation (141) internes fixes et des griffes d'arrachage (142) externes mobiles sont disposées sur chacune des parties d'outil (110, 120).
  7. Outil de moulage (100) selon la revendication 5 ou 6,
    caractérisé en ce que
    des éléments de thermorégulation (145) sont disposés entre les griffes de fixation (141) internes et les griffes d'arrachage (142) externes.
  8. Outil de moulage (100) selon l'une quelconque des revendications 5 à 7,
    caractérisé en ce que
    les griffes d'arrachage (142) externes sont fixées sur des glissières (170), qui limitent en même temps latéralement la chambre (150).
  9. Outil de moulage (100) selon l'une quelconque des revendications 5 à 8,
    caractérisé en ce que
    celui-ci présente une première position de fermeture et une seconde position de fermeture.
  10. Outil de moulage (100) selon la revendication 8 et 9,
    caractérisé en ce que
    la première position de fermeture et la seconde position de fermeture sont rendues possibles par un déplacement différent des glissières (170).
EP19711552.0A 2018-03-19 2019-03-12 Procédé et outil pour fabriquer par hydroformage un récipient en matière plastique, en particulier un réservoir de carburant Active EP3768492B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018204145.8A DE102018204145B4 (de) 2018-03-19 2018-03-19 Verfahren und Werkzeug zur Herstellung eines Kunststoffbehälters, insbesondere eines Kraftstoffbehälters, durch Innendruckformen
PCT/EP2019/056190 WO2019179830A1 (fr) 2018-03-19 2019-03-12 Procédé et outil pour fabriquer par hydroformage un récipient en matière plastique, en particulier un réservoir de carburant

Publications (2)

Publication Number Publication Date
EP3768492A1 EP3768492A1 (fr) 2021-01-27
EP3768492B1 true EP3768492B1 (fr) 2022-08-31

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US (1) US20230191686A1 (fr)
EP (1) EP3768492B1 (fr)
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WO (1) WO2019179830A1 (fr)

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DE102018211136A1 (de) 2018-07-05 2020-01-09 Volkswagen Aktiengesellschaft Verbessertes Verfahren und Werkzeug zur Herstellung eines Kunststoffbehälters, insbesondere eines Kraftstoffbehälters, durch Innendruckformen und insbesondere durch Blasformen

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DE10064801A1 (de) * 2000-12-22 2002-06-27 Basell Polyolefine Gmbh Verfahren zur Herstellung von Kunststoffhohlkörpern
DE102005034541A1 (de) * 2005-07-23 2007-02-01 Sig Technology Ltd. Verfahren und Vorrichtung zur Blasformung von Behältern
DE102006027255A1 (de) * 2006-06-09 2007-12-13 Kautex Textron Gmbh & Co. Kg Verfahren zur Herstellung von Hohlkörpern aus thermoplastischem Kunststoff
DE102009030492B4 (de) 2009-06-24 2023-06-15 Kautex Maschinenbau Gmbh Verfahren zur Herstellung eines Kunststoffartikels sowie Blasformwerkzeug
BE1019342A5 (nl) * 2010-05-20 2012-06-05 Dispack Projects Nv Vat uit kunststof, werkwijze voor het vervaardigen daarvan, en ring voor een vat.
DE102010026716B4 (de) * 2010-07-09 2013-01-24 Kautex Textron Gmbh & Co. Kg Blasformwerkzeug sowie Verfahren zur Herstellung extrusionsblasgeformter Kunststoffartikel
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DE102012001928A1 (de) 2012-02-02 2013-08-08 Kautex Maschinenbau Gmbh Verfahren zur Herstellung eines Kunststoffartikels sowie Teil des Blasformwerkzeuges
DE102013203085A1 (de) 2013-02-25 2014-08-28 Ti Automotive Technology Center Gmbh Blasformverfahren
EP2769825B1 (fr) 2013-02-25 2017-10-04 TI Automotive Technology Center GmbH Processus de moulage par soufflage et appareil
FR3011763B1 (fr) * 2013-10-14 2015-12-11 Sidel Participations "unite de moulage pour la fabrication de recipients comportant une pince de compensation"
DE102017202839B4 (de) 2017-02-22 2021-01-07 Volkswagen Aktiengesellschaft Verfahren und Werkzeug zur Herstellung eines Kunststoffbehälters, insbesondere eines Kraftstoffbehälters, durch Innendruckformen
CN106738795B (zh) * 2017-03-10 2023-04-11 东莞市今隽机械有限公司 Petg塑料内扭纹瓶专用吹塑机
CN107471611A (zh) * 2017-09-21 2017-12-15 杭州科技职业技术学院 一种吹瓶机异形瓶吹塑模具

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US20230191686A1 (en) 2023-06-22
DE102018204145A1 (de) 2019-09-19
CN111886123B (zh) 2022-06-28
DE102018204145B4 (de) 2021-09-16
EP3768492A1 (fr) 2021-01-27
CN111886123A (zh) 2020-11-03
WO2019179830A1 (fr) 2019-09-26

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